Temperature – Increasing the temperature increases the rate of photosynthesis because more energy is provided . However, if the temperature is increased to above about 45°C, the enzymes that catalyse (speed-up) the reaction begin to denature (not work anymore).
Why does temperature affect the rate of photosynthesis?
Temperature. ... As with any other enzyme-controlled reaction, the rate of photosynthesis is affected by temperature. At low temperatures, the rate of photosynthesis is limited by the number of molecular collisions between enzymes and substrates. At high temperatures, enzymes are denatured .
How does increased temperature affect photosynthesis?
High Temperatures
At temperatures above 68 degrees Fahrenheit, or 20 degrees Celsius, the rate of photosynthesis decreases because the enzymes do not work as efficiently at this temperature. This is despite the increase of carbon dioxide diffusion into leaves .
Will increasing temperature continue to increase the rate of photosynthesis?
The rate of photosynthesis does not increase with higher temperatures for all plants . Plants which grow in colder climates have an optimum rate of photosynthesis at low temperatures. Therefore different types of plants have optimum temperatures for photosynthesis.
Why does photosynthesis occur faster in warmer temperatures?
However, since only light is necessary in photosynthesis, not heat from sunlight, it was concluded that the leaves in the warm temperature environment had the fastest rate of photosynthesis due to enzymes that catalyze chemical reactions in photosynthesis that work better at higher temperatures .
How temperature affects the rate of photosynthesis experiment?
As with other chemical reactions, the rate of photosynthesis increases as the temperature rises . Photosynthesis is controlled by enzymes , which become denatured if the temperature is too high. As a result, the rate of photosynthesis reaches its maximum at an optimum temperature, then decreases.
What is the best temperature for photosynthesis?
The optimum temperature range for photosynthesis is 35–40oC .
What affects the rate of photosynthesis?
Three factors can limit the rate of photosynthesis: light intensity, carbon dioxide concentration and temperature .
How does temperature affect transpiration?
Temperature: Transpiration rates go up as the temperature goes up , especially during the growing season, when the air is warmer due to stronger sunlight and warmer air masses. ... Wind and air movement: Increased movement of the air around a plant will result in a higher transpiration rate.
What are the 4 factors that affect photosynthesis?
Photosynthesis is affected by light, temperature, water, and CO2 . Stomata affect the process of transpiration and do not affect photosynthesis.
Why the rate of photosynthesis in plants is low both at lower and higher temperatures?
At low temperature the activity of enzymes is lowered due to which the rate of photosynthesis is also low. Again when the temperature is very high, the activity of enzymes decreases which leads to low rate of photosynthesis. Green light is least useful in photosynthesis, because chlorophyll does not absorb green light.
Which two changes will increase the rate at which carbon dioxide diffuses into the mesophyll cells?
2.2)Which two changes will increase the rate at which carbon dioxide diffuses into the mesophyll cells ? – increased carbon dioxide concentration in the air . -increased number of stomata that are open . -The lungs are made up of tiny sacs called alveoli which presents a very large surface area for gas exchange.
What happens if the rate of respiration is more than the rate of photosynthesis?
Answer : If the rate of respiration exceeds the rate of photosynthesis, the plant will be using more oxygen than it can produce . Thus, the plant will be starved of food supply and finally die of starvation.
Why do plants grow better in warmer temperatures?
The difference between the two governs the growth of the plant. Warmer temperatures increase respiration and thus , reduce growth, according to the model. ... “You have plants achieving the same overall growth but at a faster rate,” explains Cheesman, “so it could well be that the turnover of forests becomes faster. ”
Does warm water speed up photosynthesis?
The heated water cup should have more leaves that rose than any of the other cups because of the molecules moving faster in the warm water, allowing for more leaves to photosynthesize faster , and thus rising more.
How does temperature affect photosynthesis and cellular respiration?
The increase in temperature enhances the rate of cellular respiration . It is due to the heat speeds up the reactions, means the kinetic energy is higher. It means reactions speed up and rate of cellular respiration increases. When temperature decreases, in order to conserve energy, cellular processes slow.
